Results 61 to 70 of about 1,784 (215)

Very High-energy Gamma-Ray Episodic Activity of Radio Galaxy NGC 1275 in 2022–2023 Measured with MACE

The Astrophysical Journal Letters
The radio galaxy NGC 1275, located at the central region of Perseus cluster, is a well-known very high-energy (VHE) gamma-ray emitter. The Major Atmospheric Cherenkov Experiment Telescope has detected two distinct episodes of VHE ( E > 80 GeV) gamma-ray ...
S. Godambe, N. Mankuzhiyil, C. Borwankar, B. Ghosal, A. Tolamatti, M. Pal, P. Chandra, M. Khurana, P. Pandey, Z. A. Dar, S. Godiyal, J. Hariharan, Keshav Anand, S. Norlha, D. Sarkar, R. Thubstan, K. Venugopal, A. Pathania, S. Kotwal, Raj Kumar, N. Bhatt, K. Chanchalani, M. Das, K. K. Singh, K. K. Gour, M. Kothari, Nandan Kumar, Naveen Kumar, P. Marandi, C. P. Kushwaha, M. K. Koul, P. Dorjey, N. Dorji, V. R. Chitnis, R. C. Rannot, S. Bhattacharyya, N. Chouhan, V. K. Dhar, M. Sharma, K. K. Yadav   +39 more
doaj   +1 more source

Designing chiral organic small molecules for circularly polarized light detection via group theory

InfoMat, EarlyView.
The chiral point group determines the arrangement of the μ‐m of chiral organic small molecules, thereby influencing their chiral photoelectric properties. In particular, chiral molecules with the D2 point group can effectively align the μ‐m to be either 0° or 180°, an effective strategy for high‐performance circularly polarized light photodetectors ...
Zhenping Li, Wenkai Zhao, Jiajun Fu, Wenhan Wu, Xingshuo Chu, Zihao Xu, Yu‐Wu Zhong, Hao‐Li Zhang, Wei Ma, Guankui Long, Xiaobo Shang   +10 more
wiley   +1 more source

TAIGA - a hybrid array for high energy gamma astronomy and cosmic ray physics

EPJ Web of Conferences, 2018
The physics motivations and advantages of the new TAIGA (Tunka Advanced Instrument for cosmic ray physics and Gamma Astronomy) detector are presented.
Budnev N., Astapov I., Bezyazeekov P., Boreyko V., Borodin A., Brueckner M., Chiavassa A., Dyachok A., Fedorov O., Gafarov A., Garmash A., Gorbunov N., Grebenyuk V., Gress O., Gress T., Grishin O., Grinyuk A., Haungs A., Hiller R., Horns D., Huege T., Kalmykov N., Kazarina Y., Kindin V., Kiryuhin S., Kirilenko P., Kleifges M., Kokoulin R., Kompaniets K., Korosteleva E., Kostunin D., Kozhin V., Kravchenko E., Kuzmichev L., Lemeshev Yu., Lenok V., Lubsandorzhiev B., Lubsandorzhiev N., Mirgazov R., Mirzoyan R., Monkhoev R., Osipova E., Pakhorukov A., Panasyuk M., Pankov L., Petrukhin A., Poleschuk V., Popescu M., Popova E., Porelli A., Postnikov E., Prosin V., Ptuskin V., Rjabov E., Rubtsov G., Pushnin A., Sagan Y., Sabirov B., Samoliga V., Schröder F., Semeney Yu., Silaev A., Silaev A., Sidorenkov A., Skurikhin A., Slunecka V., Sokolov A., Spiering C., Sveshnikova L., Tabolenko V., Tarashansky B., Tkachenko A., Tkachev L., Tluczykont M., Wischnewski R., Zagorodnikov A., Zhurov D., Zurbanov V., Yashin I.   +78 more
doaj   +1 more source

Ground-Based Gamma Ray Astronomy [PDF]

Brazilian Journal of Physics, 2014
This paper is the write-up of a rapporteur talk given by the author at the 33rd International Cosmic Ray Conference in Rio de Janeiro, Brazil, in 2013. It attempts to summarize results and developments in ground-based gamma-ray observations and instrumentation from among the $\sim300$ submissions to the gamma-ray sessions of the meeting.
openaire   +2 more sources

CubeSats for Gamma-Ray Astronomy

, 2022
After many years of flying in space primarily for educational purposes, CubeSats - tiny satellites with form factors corresponding to arrangements of "1U" units, or cubes, each 10 cm on a side - have come into their own as valuable platforms for technology advancement and scientific investigations. CubeSats offer comparatively rapid, low-cost access to
Bloser, Peter F., Murphy, David, Fiore, Fabrizio, Perkins, Jeremy   +3 more
openaire   +2 more sources

Single‐Particle Insights Into the Electronic Structure and Enhanced Stability of CsPbBr3/FAPbBr3 Core/Crown Nanoplatelets at the Nanometer Scale

Small, EarlyView.
Single‐particle‐level investigation using scanning tunneling spectroscopy reveals electronic structure and type‐I band alignment of individual CsPbBr3@FAPbBr3 core‐crown nanoplatelet. Crown passivation suppresses deep trap states by 47% and markedly improves electrical stability under repeated bias sweeps.
Shaocheng Shen, Anuraj S. Kshirsagar, John Michael Lane, Chenguang Zhang, Haixin Zhang, Kedar Hippalgaonkar, Neeraj Rai, Mahesh K. Gangishetty, Kun Wang   +8 more
wiley   +1 more source

Local Structural Signatures of Shear Bands in Metallic Glasses via Electron Nanodiffraction

Small Methods, EarlyView.
In this research, we employed scanning electron nano‐diffraction to investigate the local degree of centrosymmetry and structural anisotropy (strain) in deformed metallic glass. The study provides significant new insights into the deformation mechanisms of glassy materials, revealing the nature of local structural transformations and demonstrating how ...
Huyen T. Pham, Daniel East, Chunguang Tang, Matteo Baggioli, Alessio Zaccone, Timothy C. Petersen, Amelia C. Y. Liu   +6 more
wiley   +1 more source

Gamma-Ray Astronomy

, 2008
In this paper, I present a summary of the status of γ-ray astronomy in the very high energy band (E > 50GeV), as of early 2007. It covers a selection of results obtained from observations made by ground-based detectors using the atmospheric Cherenkov or air shower techniques, together with short descriptions of some of the present and future ...
openaire   +2 more sources

Sites for Gamma-ray Astronomy in Argentina

AIP Conference Proceedings, 2008
Submitted to Proceedings of "4th Heidelberg International Symposium on High Energy Gamma-Ray Astronomy 2008"
A. C. Rovero, G. E. Romero, I. Allekotte, X. Bertou, E. Colombo, A. Etchegoyen, B. Garcia, D. Garcia-Lambas, H. Levato, M. C. Medina, H. Muriel, P. Recabarren, Felix A. Aharonian, Werner Hofmann, Frank Rieger   +14 more
openaire   +4 more sources

Thermal histories of El Médano 300 (EM 300) and Northwest Africa 8155 (NWA 8155): Implications for the diversity of IAB‐ungrouped iron meteorites and their parent bodies

Meteoritics &Planetary Science, EarlyView.
Abstract This study provides the first petrographic, crystallographic, and chemical comparison between El Médano 300 (EM 300) and Northwest Africa 8155 (NWA 8155), two particular IAB‐ungrouped iron meteorites. Both contain exceptionally large graphite nodules and “flowers”, providing unique insights into carbon behavior in metallic melts and cooling ...
L. Perez, M. Roskosz, F. Danoix, L. Kern, V. Megevand, C. Brillatz, B. Devouard, J. Gattacceca, M. Gounelle   +8 more
wiley   +1 more source